Improvement in harness-saddle trees



anni cac JOHN H. MRTIN, OFl COLUMBUS,OHIO.y

Letters Patent No. 112,061, dated February 21, 1871.

IMPROVEMENT IN HARNESS-SADDLE TREES.

The Schedule referred to in these Letters Patent anmakng parl: of the same.

To all whom it may concern:

Be it known that I, J oHN H. MARTIN, of Columbus, in the county of Franklin and State of Ollio, have invented certain Improvements in Harnesslrees; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to thc accompanying drawing making part ot' this speciiication, in 'which- Figure 1, plate l, is a perspective view of the inrproved tree and pads.

Figure 2, plate 1, is a perspective view4 of the tree withpnt the pads.

Figure 3, plate 1, is a perspective view of a pad detachedfrom the tree.

Figures 4, 5, 6, 7 8, and, 9, are `views showing more particularly the construction of the tree and pads. I

Similar letters ot' reference indicate corresponding parts in the several figures.

The nature of my invention consists- First, in the construction of the yoke of' the tree and the terrets or guides for the lines of one piece of metal, thereby obtaining great strength and avoiding the expense and liability to workloose of the old terrets or line-rings.

Second, in the construction of T-shaped heads on the ends of the yoke, adapted to fit into recesses made in the pad-plates, and to form pivotal connections .therefor which will not be liable to become detached,

as will be hereinafter explained. y

Third, inthe formation in euch pad-plate of a recess to receive a T-shaped head on the yoke, and also to receive a spring, whichwill keep the said head lirmly in. place and only allow it to bc introduced in its Yplace or removed therefrom when the pad-plate is held out of its normal position or out of line with the yoke, as will be hereinafter' explained.

To enable others skilled in the art to understand my invention, I will explain its construction and operation.

In the accompanying drawing- -A represents the yoke, which is produced with terrets or loops, a a, on opposite sides of its center, and with T-shaped heads, b Ab, on its extremities.

'lhe terrets c a rise frd'xn spaces or openings through the yoke, which are bounded in front and rear by bars,

c c. This aords great strength, combined with lightness and simplicity of construction. v By thus making the yoke and tcrrcts or line-loops c a of one piece of metal. the labor and expense'attending the screw-terrets yare avoided, besides, the improved terrets are notso liable to become broken.

Each extremity of the yoke lhas a T-shaped head formed on it, as shown clearly in fig. 2, the pivotal portions of which extend transversely with respect to the length of the yoke.

These T-shaped extremities b b are rcccivedjnto recesses which are formed in the elevated circular portions e on the'pad-plates B, as shown in gs. 4, 5, and 6.

Then the pad-plates B are connected to the ends of the yoke the former are in line with the latter, and the pivotal portions of the T-shape'd heads are at right angles to the length of oblong slots, ff, through which these heads are passed in order to enter their receptacles in the raised portions e. vIt will thus be seen that the pad-plates can only be connected to or disconnected from the ehds of the yoke when the former are held out of their normal position for use; that is to.v say, at o r nearly at right angles to the length of the yoke.

Then the plate B is attached to the yoke the pivetal portions b are received into recesses, o o, and are held therein by the action of a spring, s, and wearingplateg, which are confined in a cup, riveted to the bottom of the plate The spring s may be of metal or of rubber. It should be strong enough to keep the end of the yoke lfirmly up against its bearings o o and prevent looseness.

The wearing-plate y, which is between the spring s and the T-shaped end b, is prevented from turning by little extensions which are formed on it, that are received into recesses, e' t, in the cup C.

It will be seen by reference to tig. 8, (which shows the back of a plate, B, without the cup (3,) that on opposite sides ofthe recesses o o beveled surfaces are formed, which allow the pivotal portions l) b to be readily turned from the'slot f and brought into said re' cesses o during the act of connecting a plate, B, to its yoke.

I am aware that pad-plates have been connected to harness-trees before my invention by pivotal nuts and screw-terrets, butthe pivotal nuts were made separate from the yokcs or trees, and the pad-plates were prevented from turning out of line by tenons and grooves combined with the terret-fastenings. I do not, therefore, claim such a'contrivance as my invention.

Having described my invention,

What I claim as new, and desire to secure'by Letters Patent, is-.

1. 'Ihe' terrets or rein-loops c a and yoke A, formed of one piece of metal, substantially as described.

2. The pad-plate B, formed with a perforated chamber, c, and with partitions which form recesses o within said chamber, allin lthemanner and for the purppse described.

. 3. The slotted plate 11, recessed at o o to receive a T-shaped head, b, in combination with a spring, s, inclosed in a cup, O, substantially as described.

' JOHN I I. MARTIN.

Witnesses:

GEORGIOW. DoNALnsoN, L.- E. WILSON. 

